RSP : Cold
Rolled Coils and Sheets
Rationalised sizes of CR Coils
|
Thickness
mm
|
Width
mm
|
|
0.35, 0.4, 0.5
|
900/ 920
|
|
0.63, 0.8
|
900/ 920, 1000/ 1020
|
|
1.0,1.25, 1.6, 1.85
|
900/920, 1000/ 1020, 1100/1120,
1250/ 1270
|
Note:
Some quantity may be
available in mixed thickness of
0.3 - 0.5 mm and mixed widths
of 750-1000 mm
Coil weight: 5 to 13 tonnes
for width above 1100mm and
3 to 10 tonnes up to 1100
mm width.
Coil Internal Diameter - 610
mm from CR-1 route and
510 mm from Tandem Mill route.
Common Grades : IS 513 Grades
O, D
Tolerance as per IS - 513/
1994.
Rationalised sizes of Cold
Rolled Sheets
|
Thickness
mm
|
Width
mm
|
Length
mm
|
|
0.5
|
900
|
2500
|
|
0.63, 0.8
|
900, 1000
|
2500
|
|
1.0, 1.25, 1.6
|
900, 1000, 1100, 1250
|
2500
|
Common Grades:
IS 513/ 1994,
Grades O, D
For
Specifications click here
Packaging:
CR Coils
Coils are first packed with
paper and high-density polythene and then secured with steel strapping.
A coil is strapped with three eye and two circumferential straps. For
identification, one sticker and one metallic tag with a sticker are
provided. These are then loaded into wagons with the eye of the coil
in horizontal position. Straps again unitise them.
Packaging:
CR Sheets
These are packed in packets
of 3 - 10 tonnes each and covered with high density polythene and paper.
Thereafter, these are bound with steel straps. They also have stickers
inside the packets and metal tags attached to the strips.
Tolerances
as per IS 513/ 1994
Tolerance
on Thickness of Sheets
|
|
Tolerance on Thickness
for different widths
|
|
Nominal thickness
mm
|
Up to 1250 mm
|
Above 1250
Up to 1600 mm
|
Above 1600 mm
|
|
Up to 0.25
|
± 0.03
|
|
|
|
Above 0.25 up to 0.40
|
± 0.04
|
|
|
|
Above 0.40 up to 0.60
|
± 0.05
|
± 0.06
|
|
|
Above 0.60 up to 0.80
|
± 0.06
|
± 0.07
|
± 0.08
|
|
Above 0.80 up to 1.00
|
± 0.08
|
± 0.09
|
± 0.10
|
|
Above 1.00 up to 1.25
|
± 0.09
|
± 0.10
|
± 0.12
|
|
Above 1.25 up to 1.60
|
± 0.11
|
± 0.12
|
± 0.14
|
|
Above 1.60 up to 2.00
|
± 0.12
|
± 0.14
|
± 0.16
|
Tolerance
on Width of Sheets
|
Width of Sheets
|
Tolerance
|
|
Up to 1250 mm
|
+ 7, - 0
|
|
Above 1250 mm
|
+ 10, - 0
|
Tolerance
on Length of Sheets
|
Length of Sheets
|
Tolerance
|
|
Up to 2000 mm
|
+ 15, -0Z
|
|
Above 2000 mm
|
+ 0.75% of length, - 0
|
Applications
|
Specification
|
Size
|
Applications
|
|
IS 513 O / D (K)
|
Bitumen and Barrel sizes
|
Packaging
|
|
IS 513 D/ DD/ EDD
|
All sizes
|
Automobile
|
|
IS 513 O / D (K)
|
0.8 to 2 mm thickness
|
Precision tubes
|
|
IS 513 O/ D with Cu
|
0.63 to 2 mm thickness
|
Corrosion resistance applications
|
|
IS 513 O, D
|
0.8 to 2 mm
|
Household appliances
|
|
|
